Most watch care guides tell you to wipe the crystal and store it in a dry place. That information is correct but incomplete. The real question for a mechanical watch owner is not "how do I clean it" but "how long will it last, and what does long-term ownership actually require?" For PINDU automatic watches — powered by NH35A or Miyota 8215 movements — the answer is clear, and considerably more encouraging than most buyers expect. This guide covers the complete ownership timeline: from new to service to long-term wear.
How Long a Mechanical Watch Actually Lasts
A quality mechanical watch, properly maintained, has no theoretical end-of-life. Unlike a quartz movement — which has a battery that expires and electronic components that eventually degrade — a mechanical movement contains no consumable parts. Every component can be replaced, cleaned, or rebuilt. The oldest working mechanical watches date to the 17th century and keep time still. The NH35A movement powering most PINDU automatics has been in continuous production since the 1990s, with a global service and parts network that will outlast most of the people buying it today.
The practical constraint is not component life but lubricant degradation. The oils and greases applied to the movement's friction points — escapement, gear pivots, keyless works — dry, thicken, or evaporate over time. This is what causes a mechanical watch to lose accuracy or stop entirely if left unserviced for too long. The service interval for NH35A-based watches is generally accepted at 5–7 years under normal wear, at which point a qualified watchmaker disassembles, cleans, re-lubricates, and reassembles the movement. After service, the watch runs as it did new.

Service Intervals by Movement Type
NH35A (Used in Most PINDU Automatics)
Recommended service interval: every 5–7 years. The NH35A is one of the most serviced movements in the world — virtually every watchmaker who accepts mechanical watches will be familiar with it. Service cost at a competent independent watchmaker typically runs $80–$150 in most markets, occasionally more in high-cost cities. This compares favourably to Swiss movements, where service costs often exceed $200–$500 for equivalent work.
Signs the NH35A needs service before the 7-year mark: accuracy drift beyond ±20 seconds per day (well outside its rated specification), the mainspring failing to stay wound, or the crown feeling stiff or gritty during winding. None of these are failures; they are normal signals that the lubricants need refreshing.
Miyota 8215 (Used in PINDU Skeleton Models Including P6618)
Recommended service interval: every 5–7 years, similar to the NH35A. The 8215 is a simpler movement with fewer complications, which some watchmakers argue makes it more tolerant of extended intervals. It shares the same basic service requirement: disassembly, ultrasonic cleaning, re-lubrication, reassembly, timing regulation.
Tourbillon Movements (P6568, P6569)
Recommended service interval: every 3–5 years. The tourbillon cage adds complexity that benefits from more frequent attention. The cage itself — typically 70–90 components — must be disassembled separately from the base movement and re-lubricated at every pivot point. Not all watchmakers are comfortable servicing tourbillons; it's worth identifying a specialist before purchase if you plan to service rather than replace. Service cost for a tourbillon movement runs higher than standard automatics: typically $150–$300+ at a qualified watchmaker.

What a Full Movement Service Involves
A proper mechanical watch service is not a quick tune-up. The complete process involves:
- Case disassembly — case back removed, movement extracted, crown and stem removed
- Movement disassembly — every wheel, bridge, jewel, and spring removed individually from the plate
- Ultrasonic cleaning — all components washed in a multi-stage ultrasonic cleaning machine
- Inspection — each part checked for wear, deformation, or damage; worn parts replaced
- Re-lubrication — correct lubricant applied to every contact point under magnification
- Reassembly and regulation — movement rebuilt, regulation adjusted on a timing machine to manufacturer spec
- Case reassembly and pressure testing — water resistance re-tested to stated ATM rating
Time required: typically 1–3 weeks for a full service at a competent independent watchmaker. This is not a service you drop in for — plan ahead if you're approaching the 5-7 year mark.
How to Find a Watchmaker for Your PINDU Watch
PINDU's movements (NH35A, Miyota 8215) are universal — any competent watchmaker who services mechanical watches will accept them. You do not need a brand-authorised service centre. Useful approaches:
- Local jewellers with in-house watchmakers: Many jewellery shops retain a watchmaker or have a regular visiting technician. Ask specifically whether they service Japanese automatic movements.
- Independent watchmakers: Search for "independent watchmaker" or "watch repair" in your area. Look for watchmakers who mention mechanical or automatic watch service specifically — not just battery replacement shops.
- Online service specialists: Several reputable mail-in watch service companies in the UK, US, and EU accept NH35A and Miyota movements. Check reviews for mechanical service specifically, not just strap work.
For the P6568 and P6569 tourbillon models, ask specifically whether the watchmaker has experience with tourbillon disassembly before committing. Not all will; those who do will say so clearly.

PINDU's 3-Year Warranty: What It Covers
Every PINDU watch purchased from the official store includes a 3-year warranty covering manufacturing defects in the movement, case, and crystal. This covers situations where the movement stops, runs significantly outside its rated accuracy, or the case shows premature failure under normal use. It does not cover wear and tear, accidental damage, or modifications.
The warranty is specific to official store purchases. Watches bought from third-party sellers — Amazon marketplace, AliExpress, eBay — do not carry manufacturer warranty support. This is one of the primary reasons to buy direct from PINDU: the warranty is actionable, not nominal.
For a full range of PINDU automatics with 3-year warranty coverage, browse the complete PINDU collection. For the newest models with current availability, check New Arrivals.
Frequently Asked Questions
How often does a PINDU automatic watch need servicing?
NH35A and Miyota 8215-powered PINDU automatics benefit from servicing every 5–7 years. PINDU's tourbillon models (P6568, P6569) benefit from more frequent service every 3–5 years due to the additional complexity of the escapement cage mechanism.
How much does it cost to service a PINDU watch?
Service cost for NH35A and Miyota 8215 movements typically runs $80–$150 at an independent watchmaker. Tourbillon service is more specialised and typically costs $150–$300+. Costs vary by market and watchmaker.
Can I service a PINDU watch myself?
Movement servicing requires specialised tools (movement holder, watchmaker's screwdrivers, ultrasonic cleaner, timing machine) and technical knowledge. DIY servicing risks damaging the movement if done incorrectly. Crystal and strap replacement are achievable for careful owners with the right tools; full movement service is best left to a qualified watchmaker.
Does the PINDU 3-year warranty cover servicing?
The warranty covers manufacturing defects — movement failure, premature inaccuracy, or case defects under normal use. Standard scheduled servicing (every 5–7 years) is outside warranty scope and is an owner maintenance cost. Buy from the official PINDU store to ensure the warranty is valid and actionable.